Toothbrush



FIG. 1 is a bottom and left side perspective view of a toothbrush showing my new design;

FIG. 2 is a top and right side perspective view thereof;

FIG. 3 is a bottom and left side perspective view of a second embodiment of the design shown in FIGS. 1-2; and,

FIG. 4 is an exploded top and right side perspective view of FIG. 3 showing the bristle insert separated from the head. 

The ornamental design for a toothbrush, as shown and described. 